WM8994 Datasheet, PDF (335/359 Pages) Wolfson Microelectronics plc – Multi-Channel Audio Hub CODEC for Smartphones

Production Data
WM8994
REGISTER BIT
LABEL
DEFAULT
DESCRIPTION
ADDRESS
R1800
15
(0708h)
GPIO 9
GP9_DIR
1
GPIO9 Pin Direction
0 = Output
1 = Input
14
GP9_PU
0
GPIO9 Pull-Up Enable
0 = Disabled
1 = Enabled
13
GP9_PD
1
GPIO9 Pull-Down Enable
0 = Disabled
1 = Enabled
10
GP9_POL
0
GPIO9 Polarity Select
0 = Non-inverted (Active High)
1 = Inverted (Active Low)
9 GP9_OP_CFG
0
GPIO9 Output Configuration
0 = CMOS
1 = Open Drain
8
GP9_DB
1
GPIO9 Input De-bounce
0 = Disabled
1 = Enabled
6
GP9_LVL
0
GPIO9 level. Write to this bit to set a GPIO output.
Read from this bit to read GPIO input level.
For output functions only, when GP9_POL is set, the
register contains the opposite logic level to the external
pin.
4:0 GP9_FN [4:0] 0_0001 GPIO9 Pin Function
00h = ADCDAT3
01h = GPIO
02h = SDOUT
03h = IRQ
04h = Temperature (Shutdown) status
05h = MICBIAS1 Current Detect
06h = MICBIAS1 Short Circuit Detect
07h = MICBIAS2 Current Detect
08h = MICBIAS2 Short Circuit Detect
09h = FLL1 Lock
0Ah = FLL2 Lock
0Bh = SRC1 Lock
0Ch = SRC2 Lock
0Dh = AIF1 DRC1 Signal Detect
0Eh = AIF1 DRC2 Signal Detect
0Fh = AIF2 DRC Signal Detect
10h = Write Sequencer Status
11h = FIFO Error
12h = OPCLK Clock output
13h = Temperature (Warning) status
14h = DC Servo Done
15h = FLL1 Clock output
16h = FLL2 Clock output
17h to 1Fh = Reserved
Register 0708h GPIO 9
REFER TO
w
PD, April 2012, Rev 4.4
335